Derivative Financial Instruments - Schedule of the Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$ 19,707	$ 26,186
Fair value of derivative liabilities	$ 19,602	25,966
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other liabilities
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$ 19,694	26,186
Fair value of derivative liabilities	19,416	25,749
Interest rate contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	13	0
Fair value of derivative liabilities	4	1
Derivatives not designated as hedging instruments \| Derivative Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	19,498	26,081
Derivatives not designated as hedging instruments \| Derivative Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	19,335	25,623
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Derivative Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	19,498	26,081
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Derivative Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	19,153	25,407
Derivatives not designated as hedging instruments \| Other derivative contracts \| Derivative Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	0	0
Derivatives not designated as hedging instruments \| Other derivative contracts \| Derivative Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	182	216
Derivatives designated as hedging instruments \| Derivative Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	209	105
Derivatives designated as hedging instruments \| Derivative Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	267	343
Derivatives designated as hedging instruments \| Foreign exchange contracts \| Derivative Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	196	105
Derivatives designated as hedging instruments \| Foreign exchange contracts \| Derivative Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	263	342
Derivatives designated as hedging instruments \| Interest rate contracts \| Derivative Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	13	0
Derivatives designated as hedging instruments \| Interest rate contracts \| Derivative Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	$ 4	$ 1

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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